Self-calibrating microwave transponder

Details Self-calibrating microwave transponder Self-calibrating microwave transponder

1976-03-10

1977-04-12

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 177, G01S 738, G01S 740

Patent

active

040178560

ABSTRACT:
A self-calibrating microwave transponder incorporating an amplifier, modulator, instantaneous frequency discriminator, memory and voltage controlled oscillator is described which may generate an RF signal in response to the carrier frequency of received low duty cycle pulse RF signals. The instantaneous frequency discriminator is used to provide an address signal from the pulse RF signals which is used to access a memory that contains the correct tuning data for the voltage controlled oscillator to generate an RF signal.

REFERENCES:
patent: 3044061 (1962-07-01), Richmond et al.
patent: 3971021 (1976-07-01), Cann
patent: 3983482 (1976-09-01), Doherty

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